magento2 – Magento 2.3.3 Tax question

I know this is a common issue, but cant seem to find a proper answer anywhere.
I am running a Magento 2.3.3 shop and have my product imported through a plugin and these are imported excluding tax (i cannot change this, my industry suppliers work on excluding tax and this is how the prices are imported).
No matter what tax settings i use the inc VAT prices are always wrong when added to the cart.
For example, i have a product that sells for £8 inc VAT, so the ex VAT price set in the catalog is £6.67. The catalog and product pages display this correct at £8, but when a quantity of 2 is added to that cart it shows at £8.01 each.
I had an order yesterday for:
2 x £8
2 x 17 (these show as £17.01 in the cart)
£5 delivery

Magento works this out at £55.02, not £55. Before tax it displays as £45.85, not £45.83 like it should be.

No customers have yet questioned it, but it is frustrating and only a matter of time until somebody does.

My current tax settings are:
Tax Calculation Method Based On: Total (Have tried unit and row and i would prefer unit)
Catalog Prices: Excluding Tax (has to be this way)
Shipping Prices: Excluding Tax

Discounts are a whole other ball game and dont seem to be ale to do calculate discount after and including tax but this is not my worry for now.

I would like to figure out how i can display, in this example the prices correct with a total of £55 inc VAT. I know this is a rounding issue but dont know how to solve it. All prices are imported at 2 decimal places.

Thanks